Comparaison

Sélection

Lolium multiflorum

Ivraie multiflore

Photos

Photos épinglées

Lolium multiflorum
Individu
3
Critères
Critère Lolium multiflorum
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Assez rare (AR)
Hauteur mini-maxi 20 - 100 cm
Nombre d'étamines
3
Habitat
Champ cultivé, vigne
Structure de l'inflorescence générale
Epi ou grappe simple (1 épillet à chaque noeud)
Pilosité des feuilles inférieures
Glabres
Largeur moyenne des feuilles inférieures
2 - 4 mm
4 - 10 mm
Détail de l'inflorescence
Épillets médians encastrés dans l'axe à 1 glume
Aspect du fleuron à maturité
Fleuron non enflé à caryopse peu épais
Préfoliaison (Formation des feuilles)
Préfoliaison enroulée
Type de plante
Plante herbacée à fleurs
  • À feuilles linéaires et longues gaines
Type biologique
Plante terrestre
  • Plante annuelle
Disposition des feuilles
Tige aérienne avec feuilles
  • Alternes
Forme des feuilles indivises
Rapport longueur / largeur > 10
  • Linéaire
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
Dimension de la fleur en mm
Plante à fleurs nues
  • Pièces florales absentes ou transformées en soies
Type d'inflorescence
Fleurs regroupées
  • Epi ou épi composé
Forme de la tige ou de la hampe florale
Tige cylindrique
  • Lisse ou finement striée
Structure de l'épillet
Certains épillets avec plus de 2 fleurons fertiles
  • 5 fleurons ou plus
Structure de la semence
1 seul fleuron
  • Fleuron muni d'une baguette
Nombre de pétales ou de tépales
Aucun pétale
Port de la plante
Tige dressée
Position de l'ovaire
Supère
Couleur dominante des pièces pétaloides
Pas de calice ni de corolle
Inflorescence primaire
Epillet
Position de l'arête des lemmes
Terminale courte (< 10 cm)
Type de ligule
Membraneuse glabre ou courtement ciliée
Présence d'oreillettes
Oreillettes glabres
Taille de l'épillet
8 - 10 mm
1 - 2 cm
> 2 cm
Taille de la glume supérieure
Nettement dépassée par les fleurons
Orientation des épillets par rapport à l'axe
Appliqués à l'axe par le dos des lemmes
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Type de fleur
Autre
  • Autre (Voir aide)
Type de fruit
Sec indéhiscent
  • Caryopse
Phénologie
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Carte des observations
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